|Publication number||US6554760 B2|
|Application number||US 09/983,463|
|Publication date||Apr 29, 2003|
|Filing date||Oct 24, 2001|
|Priority date||Oct 25, 2000|
|Also published as||EP1377342A2, EP1377342A4, US20020049411, WO2003028808A2, WO2003028808A3|
|Publication number||09983463, 983463, US 6554760 B2, US 6554760B2, US-B2-6554760, US6554760 B2, US6554760B2|
|Inventors||Gary A. Lamoureux, Richard A. Terwilliger|
|Original Assignee||Gary A. Lamoureux, Richard A. Terwilliger|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (3), Referenced by (115), Classifications (10), Legal Events (14)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This application is related to Provisional patent application Ser. No. 60/242,414 filed Oct. 25, 2000.
This invention relates to a needle assembly for implanting therapeutic elements. More specifically, this invention relates to such an assembly which allows the user to load and place radioactive “seeds” in the body for the purpose of treating cancer.
The placement of a pattern of radioactive sources in the body to treat cancer by destroying cancer cells with low dose radiation is an accepted and preferred method of treatment as an alternative to general surgery.
These radioactive sources or “seeds” are placed into the body using multiple hollow needles or needle assemblies. The needles act as holders and carriers of such seeds until the needles are inserted into predetermined areas of the body. Once the needles are positioned, the seeds are deployed from each hollow needle by a solid wire stylet to permanently reside in the body as the radioactive dose decays over the treatment time. As many as 25 or more needles are used in each procedure. Typically, a physicist must prepare the needles or cannula and load the seed sources and spacers into each cannula prior to the procedure. Bone wax has been used to close the end of the cannula. The wax is placed into the first 2-5 mm of the distal tip of the cannula to prevent the radioactive “seeds” from dislodging or falling out prior to insertion of the cannula into the body. The doctor then inserts the cannulas into the patient and deploys the seeds into the area to be treated.
Prior art needle assemblies disclose a cannula with a sharpened distal tip and an inner solid wire stylet that is used to push the radioactive seeds into the body. The proximal end of the cannula consists of a plastic or metal hub that allows the loading of the radioactive seeds into the cannula. The proximal end of the stylet is a plastic or metal handle for manipulation of the stylet.
The prior art devices are prepared for use by plugging the end of the cannula with bone wax. The bone wax extends into the first 2-5 mm of the distal tip of the cannula to contain the seeds and to prevent body fluids from entering the cannula before deployment of the seed. The bone-wax-plugged cannula is loaded with radioactive seeds held apart by short non-radioactive spacers that position the seeds in the body to achieve an even distribution of radiation to treat the suspected cancer in vivo.
Prior to insertion, the stylet is axially introduced into the proximal end of the cannula and rests upon the stack of seeds and spacers, which are held in place by the bone wax at the distal tip of the needle. Once the cannula is inserted into the body to the proper position, the stylet is held firm and the cannula is axially moved toward the proximal end of the stylet. This motion deposits the radioactive seeds and spacers into the body in a track or line of seeds as the cannula is pulled back.
There are two principal types of radioactive seeds. “Free” seeds are individual radioactive seeds that are loaded in the cannula with small cylindrical spacers stacked in between the radioactive seeds. The second type is a pre-manufactured “strand” of radioactive seeds that are encapsulated in a biodegradable material that spaces the radioactive seeds apart from one another.
The complications involved in the prior art stem from the use of bone wax or other materials that are used to plug the cannulas prior to the loading of the radioactive seeds.
Bone wax has many drawbacks:
1. Bone wax cannot be applied into the distal end of the cannula in a manner which assures a consistent positioning of the first seed in the cannula. The amount of wax varies needle to needle.
2. Bone wax is sticky and difficult to apply.
3. Bone wax may cause the first few seeds being deployed to stick to the end of the cannula as it is being withdrawn, displacing them from their intended position in the treated tissue (adjacent the prostate, for instance).
4. If the seeds and spacers must be removed after initial loading to change the pattern of seeds and spacers in a given needle, the bone wax prevents the unloading of the seeds in contact with the wax. This prevents the needle from being able to be reused in the procedure.
The needle assembly of the invention comprises a needle which may be delivered to the user already loaded and sterile. This reduces preparation time as well as personal exposure to the radioactive seeds.
The needle assembly of the invention exactly locates the first seed a repeatable and known distance from the distal end of the cannula in each needle used thus improving the accuracy of placing the radioactive seeds in the body.
The positioning means for the first seed may take one of a variety of forms, all of them yieldable to permit the seed to be pushed past the distal end in the implantation.
The needle assembly of the invention may include a biocompatable end plug which may be made of a variety of materials including absorbable or non-absorbable suture materials either in a braided or monofilament configuration or molded biocompatable polymers. In one embodiment of the invention, the plug may be held in place by a mechanical detail proximal to the distal end of the cannula.
This detail may be formed by parallel slits in the body of the cannula, a “U” shaped cutout in the cannula creating a “tongue” that can be displaced into the interior of the cannula, or small holes that pierce the tubular body of the cannula leaving a web between the holes. In each instance the “web” of needle material created by the hole or slitting process in the tubular body of the cannula allows for a predetermined sizing of the inner diameter of the cannula to hold the end plug or seeds in place prior to deploying them into the body.
In an alternate embodiment of the invention, holding the biocompatable end plug in place inside the cannula at the distal end of the cannula may be accomplished by modifying the diameter of the plug by mechanical distortion means or expanding the diameter of the plug by heating the material until it swells or exposing the plug to solvents.
By enlarging the diameter of the biocompatable end plug, there is created a tight fit between the plug and the cannula body at the distal tip.
The stylet of the inventive needle may be provided in a hollow tubular form. The tube used in the stylet extends through the stylet handle to create an air passageway. This hollow stylet is provided to prevent air pressure from building up inside of the cannula caused by the tight fit of the stylet and the interior diameter of the cannula. This build-up of air pressure may cause premature dislodging of the seed source as the stylet is introduced into the cannula after loading and prior to expulsion of the seeds in the body.
In the case of encapsulated seed sources, the hollow stylet can capture the tail end of the encapsulated strand and prevent the tail end from becoming entrapped between the inner diameter of the cannula and the outer diameter of the stylet during its deployment.
In essence, for implanting a therapeutic element, the invention is a needle assembly comprising a cannula having a sharpened distal end, a line of elements in the cannula extending rearward from the distal end and yeildable means for positioning the element more proximate the distal end a predetermined distance from the distal end. The assembly also includes a stylet reciprocable in the cannula and engaging the end of the line of elements more remote from the distal end of the cannula.
Further objects and features of the invention will be clear to those skilled in the art from a review of the following specification and drawings, all of which present a non-limiting form of the invention. In the drawings:
FIG. 1 is a side view with the cannula partly broken away of a preferred needle assembly embodying the invention.
FIG. 2 is a fragmentary enlarged view partly exploded, of the distal end of the assembly.
FIG. 3 is a side view with the cannula partly broken away showing use with an encapsulated line of seeds.
FIG. 4 is a fragmentary enlarged view, partly exploded, of the distal end of the assembly of FIG. 3.
FIGS. 5a, 5 b and 5 c are enlarged fragmentary top, bottom and sectional views respectively of the preferred embodiment.
FIGS. 6a, 6 b and 6 c are enlarged fragmentary top, bottom and sectional views respectively of a modified form of the invention.
FIG. 6d is similar to FIG. 5c but showing the combination with an end plug, and
FIGS. 7a, 7 b and 7 c are fragmentary top, bottom and sectional views respectively of a further modified form of the invention.
A preferred embodiment of needle assembly of the invention is shown in FIG. 1 and generally designated 10. It comprises a cannula 12 having a hub 14 formed with gripping surfaces 14 a. The cannula has a tubular body 16 broken away in FIG. 1 to show its contents and a sharpened distal end 18 beveled off at 20 to provide a point 20 a.
Reciprocably disposed in the cannula is the wire stylet 22 having an handle 24 it its proximate end. The distal end of the stylet comprises an engagement surface 26.
Also disposed within the cannula is a line of therapeutic elements, for instance, radioactive seeds 28. The seeds 28 alternate with spacers 30 of cylindrical shape and made of a biocompatable and biodegradable material such as catgut.
An end plug 32 is disposed at the distal end of the cannula. The end plug comprises a rearward cylindrical end surface 32 a (FIG. 2) which is positioned at an exact length back from the extreme distal end of the tip 20 a of the beveled point 20. This distance is critical and it does not vary from assembly-to-assembly.
The means by which the end plug 32 is positioned in the cannula with its end surface 32 a at the pre-determined distance back may be based on one of a variety of structures and techniques. To begin with, the material of the end plug is again biocompatable and biodegradable. It may be formed, for instance, of processed collagen (catgut), Nylon or various other organic substances. A preferred material is polyglactin acid (PGA) available under the trademark POLYGLACTIN 910.
The end plug 32 may be positioned as a friction fit pressed into the distal end of the cannula as a cork in a bottle. Alternatively, it may be treated with a solvent so that it adheres to the inside of the cannula wall. By another technique it may be put in position and the cannula heated to cause the end plug to swell and hold its position. As an additional variation, the cannula may be infinitesimally distorted externally to cause it to “shrink” in the area of the plug and thereby hold the plug in position.
In all embodiments, no matter by what means, the end plug is yieldably held in precise position and may be forced outward as the cannula is drawn backward on the stylet. Thus, the positioning of the end plug 32 in the cannula 12 is yieldable. Before yielding, the plug seals the needle and keeps the seeds from spilling out the needle or body fluids from entering the needle prematurely.
In more detail, in the operation of the needle assembly shown in FIGS. 1 and 2, as with the other embodiments to follow, the needle assembly is inserted in the tissue of the body to be treated, distal end first. When the insertion is to the desired depth, the stylet 22 is held firmly and the cannula is drawn back toward the handle 24 of the stylet causing the end plug 32 to give way from its initial position and deposit in the tissue the line of seeds and spacers. This operation leaves the seeds in the exact desired position in the body.
It will be understood that the exact positioning of the rear end surface 32 a at the pre-established distance back from the tip 20 a is a significant advance over the haphazard positioning of the more proximate end of a bone wax material as used in the needle assemblies of the prior art. The arrangement of the present disclosure enables the operator to be assured of the precise positioning of the front end of the first seed 28 and the succeeding spaced seeds as they are inserted.
FIGS. 3 and 4 show a similar arrangement of the plug 132—numerals augmented by 100 are used to designate corresponding parts—in the cannula 112, but instead of the line of seeds and spacers 28, 30, there is the encapsulated line of seeds 128 connected by spacing webs 131.
For the encapsulated seeds versions shown in FIGS. 3 and 4, the stylet 122 may be provided with a cylindrical recess 150 to receive the tail 152 on the proximate end of the encapsulated seeds. If desired, the cylinder recess 150 may be extended rearwardly in the form of a vent 154 which extends all the way to the end of the stylet. Such an axial vent of the stylet is also contemplated for the FIGS. 1 and 2 and other embodiments. The purpose of the vent as stated is to prevent a pressure build-up as the stylet is introduced into the cannula. Such pressure can result from the close fitting nature of the stylet in the cannula and can have the effect of a piston in a cylinder pumping inadvertent pressure on the line of seeds and spacers 28, 30 to move them prematurely.
FIGS. 5a, 5 b and 5 c are enlarged views of the distal end of the cannula in the FIGS. 1, 2 embodiment. FIG. 5a, a sectional view shows the plug 32 in place with the seeds 28 and spacers 30 lined up behind it. As stated, the plug 32 may be a friction fit or may be held in place by a solvent coating to adhesively fix the plug in place, or by heat or by minute distortions of the cannula.
In the modification of FIGS. 6a, 6 b and 6 c, the first seed 28 is held in place by a tongue 212 a which is formed from a U-shaped incision (FIG. 6) 214 wherein the legs “U” are longitudinal of the cannula 212. The cannula wall portion between the legs is bent inward of the cannula so that the distal end of the tongue engages the first seed 28 (FIG. 6c) and yieldably holds it in place. When the cannula is drawn back along the stylet, the pressure on the line of seeds will cause the tongue 212 a to yield and permit the first seed 28 in the line of spacers and seeds thereafter to move past the tongue and assume their proper place in the tissue. Thus, in the 6 a, 6 b and 6 c embodiment, the first seed 28 is positioned precisely, but rather than by the rear surface of a end plug, it is by distortion of the cannula itself, namely, the tongue 212 a which engages the first seed 28.
In the FIG. 6d variation the end plug 232 is engaged by the tongue 212 a and the plug, rather than the seed 28, is yieldably held in position with the rear surface 232 a of the plug in the exact pre-determined position in the cannula back from the point 220 a.
In the embodiment shown in FIGS. 7a, 7 b and 7 c, the cannula 312 is formed adjacent the distal end 318 with a pair of spaced openings 360 and 362. A bridge 364 in the cannula wall between the openings 360 and 362 is deflected inward in U-shape (FIG. 7c) to frictionally engage the plug 332 and hold the plug yieldably in place until it is pressed outward by the first seed 28. Here again, the rearward surface 332 a is the means for precise positioning of the forward end of the first seed.
Other variations of the invention are contemplated. In every variation the positioning of the first seed 28 is consistently established by the surface against which it abuts. Usually the abutment surface is in the form of the rear surface of a plug, but, as in the FIG. 6c arrangement, the positioning of the lead end of the first seed 28 may be a mechanical yieldable portion of the cannula itself.
Further variations in the invention are possible. Thus, while the invention has been shown but in a few forms, it is not so limited but is of a scope defined by the following claim language which may be broadened by an extension of the right to exclude others from making, using or selling the invention as is appropriate under the doctrine of equivalents.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US5460592 *||Jan 24, 1994||Oct 24, 1995||Amersham Holdings, Inc.||Apparatus and method for making carrier assembly for radioactive seed carrier|
|US6450937 *||Dec 17, 1999||Sep 17, 2002||C. R. Bard, Inc.||Needle for implanting brachytherapy seeds|
|US6450938 *||Mar 21, 2000||Sep 17, 2002||Promex, Llc||Brachytherapy device|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US6840899 *||Aug 29, 2002||Jan 11, 2005||Kinamed, Inc.||Method and instrument for surgical delivery of biocompatible materials|
|US6969344||Feb 10, 2003||Nov 29, 2005||Bard Brachytherapy, Inc.||End portion of first implantation seed spacer that receives and holds any one of implantation seed and second implantation seed spacer|
|US7037252||May 5, 2003||May 2, 2006||Draxis Specialty Pharmaceuticals, Inc.||Brachytherapy seed transport devices and methods for using same|
|US7223226||Nov 4, 2005||May 29, 2007||Nuclear Consultants Group, Inc.||Brachytherapy needle and methods for assembling same|
|US7351192||May 25, 2004||Apr 1, 2008||Core Oncology, Inc.||Selectively loadable/sealable bioresorbable carrier assembly for radioisotope seeds|
|US7361135||Aug 24, 2004||Apr 22, 2008||C R Bard, Inc||Brachytherapy system for dispensing medication|
|US7465279||Mar 31, 2004||Dec 16, 2008||Ethicon Endo-Surgery, Inc.||Marker device and method of deploying a cavity marker using a surgical biopsy device|
|US7497862 *||Aug 5, 2002||Mar 3, 2009||Tyco Healthcare Group Lp||Tissue marking apparatus and method|
|US7588528||Aug 24, 2004||Sep 15, 2009||C. R. Bard, Inc.||Brachytherapy apparatus for dispensing medication|
|US7601113||Oct 13, 2009||Cianna Medical, Inc.||Brachytherapy apparatus and methods of using same|
|US7648453 *||Jul 13, 2006||Jan 19, 2010||Isodose Control Intellectual Property B.V.||Catheter needle for internally irradiating a tumor in a body part|
|US7651505 *||Jan 26, 2010||Senorx, Inc.||Plugged tip delivery for marker placement|
|US7862497||Nov 5, 2007||Jan 4, 2011||Portola Medical, Inc.||Brachytherapy device having seed tubes with individually-settable tissue spacings|
|US7874974||Jan 25, 2011||Biocompatibles Uk Limited||Delivery system and method for interstitial radiation therapy|
|US7874976||Sep 7, 2006||Jan 25, 2011||Biocompatibles Uk Limited||Echogenic strands and spacers therein|
|US7878964||Feb 1, 2011||Biocompatibles Uk Limited||Echogenic spacers and strands|
|US7972261||Jul 20, 2006||Jul 5, 2011||Biocompatibles Uk Limited||Devices to resist migration and rotation of implants used in brachytherapy and other radiation therapy|
|US7985172||Apr 27, 2007||Jul 26, 2011||Biocompatibles Uk Limited||After-loader devices and kits|
|US7988611||Nov 3, 2006||Aug 2, 2011||Biocompatibles Uk Limited||After-loader for positioning implants for needle delivery in brachytherapy and other radiation therapy|
|US8021291||Sep 20, 2011||Biocompatibles Uk Limited||Markers for use in brachytherapy and other radiation therapy that resist migration and rotation|
|US8066627||Nov 29, 2011||Biocompatibles Uk Limited||Delivery system and method for interstitial radiation therapy using strands constructed with extruded strand housings|
|US8114007||Dec 15, 2008||Feb 14, 2012||Biocompatibles Uk Limited||Implants for use in brachytherapy and other radiation therapy that resist migration and rotation|
|US8137256||Dec 16, 2005||Mar 20, 2012||Portola Medical, Inc.||Brachytherapy apparatus|
|US8157862||Dec 10, 2010||Apr 17, 2012||Senorx, Inc.||Tissue marking implant|
|US8177792||Nov 18, 2009||May 15, 2012||Senorx, Inc.||Plugged tip delivery tube for marker placement|
|US8187159||Feb 26, 2009||May 29, 2012||Biocompatibles, UK||Therapeutic member including a rail used in brachytherapy and other radiation therapy|
|US8192345||Jan 21, 2009||Jun 5, 2012||Biocompatibles, UK||Cartridge for use with brachytherapy applicator|
|US8219182||Jul 10, 2012||Senorx, Inc.||Cavity-filling biopsy site markers|
|US8224424||Jul 13, 2009||Jul 17, 2012||Senorx, Inc.||Tissue site markers for in vivo imaging|
|US8226539||Jul 24, 2012||Portola Medical, Inc.||Brachytherapy apparatus for asymmetrical body cavities|
|US8226730 *||Jul 24, 2012||Cook Medical Technologies Llc||Surgical implant|
|US8298129||Oct 30, 2012||Core Oncology, Inc.||Selectively loadable/sealable bioresorbable carrier assembly for radioisotope seeds|
|US8311610||Jan 22, 2009||Nov 13, 2012||C. R. Bard, Inc.||Biopsy tissue marker|
|US8361082||Mar 1, 2011||Jan 29, 2013||Senorx, Inc.||Marker delivery device with releasable plug|
|US8401622||Dec 17, 2007||Mar 19, 2013||C. R. Bard, Inc.||Biopsy marker with in situ-generated imaging properties|
|US8437834||May 7, 2013||C. R. Bard, Inc.||Breast marker|
|US8447386||Dec 14, 2010||May 21, 2013||Senorx, Inc.||Marker or filler forming fluid|
|US8470294||Jun 25, 2010||Jun 25, 2013||Microspherix Llc||Flexible and/or elastic brachytherapy seed or strand|
|US8486028||Sep 30, 2011||Jul 16, 2013||Bard Peripheral Vascular, Inc.||Tissue marking apparatus having drug-eluting tissue marker|
|US8498693||Apr 8, 2011||Jul 30, 2013||Senorx, Inc.||Intracorporeal marker and marker delivery device|
|US8545554||Jan 16, 2009||Oct 1, 2013||Allergan, Inc.||Intraocular injector|
|US8579931||Sep 29, 2011||Nov 12, 2013||Bard Peripheral Vascular, Inc.||Apparatus for the percutaneous marking of a lesion|
|US8626269||Jun 8, 2011||Jan 7, 2014||Senorx, Inc.||Fibrous marker and intracorporeal delivery thereof|
|US8626270||Jun 13, 2012||Jan 7, 2014||Senorx, Inc.||Cavity-filling biopsy site markers|
|US8634899||Feb 3, 2006||Jan 21, 2014||Bard Peripheral Vascular, Inc.||Multi mode imaging marker|
|US8639315||May 16, 2013||Jan 28, 2014||Senorx, Inc.||Marker or filler forming fluid|
|US8668676||Jun 30, 2009||Mar 11, 2014||Allergan, Inc.||Apparatus and methods for implanting particulate ocular implants|
|US8668737||Mar 21, 2012||Mar 11, 2014||Senorx, Inc.||Tissue marking implant|
|US8670818||Dec 30, 2008||Mar 11, 2014||C. R. Bard, Inc.||Marker delivery device for tissue marker placement|
|US8718745||May 25, 2010||May 6, 2014||Senorx, Inc.||Tissue site markers for in vivo imaging|
|US8784433||Apr 27, 2012||Jul 22, 2014||Senorx, Inc.||Plugged tip delivery tube for marker placement|
|US8790235||Aug 7, 2009||Jul 29, 2014||Eckert & Ziegler Debig S.A.||Devices to resist migration and rotation of implants used in brachytherapy and other radiation therapy|
|US8795146||May 4, 2010||Aug 5, 2014||Eckert & Ziegler Bebig S.A.||Implants including spacers for use in brachytherapy and other radiation therapy that resist migration and rotation|
|US8821835||Jun 13, 2013||Sep 2, 2014||Microspherix Llc||Flexible and/or elastic brachytherapy seed or strand|
|US8880154||Jul 19, 2013||Nov 4, 2014||Senorx, Inc.||Fibrous marker and intracorporeal delivery thereof|
|US8965486||Dec 6, 2013||Feb 24, 2015||Senorx, Inc.||Cavity filling biopsy site markers|
|US9039761 *||Oct 25, 2006||May 26, 2015||Allergan, Inc.||Ocular implant delivery assemblies with distal caps|
|US9039763||Jan 28, 2014||May 26, 2015||Senorx, Inc.||Tissue marking implant|
|US9042965||Mar 6, 2013||May 26, 2015||C. R. Bard, Inc.||Biopsy marker with in situ-generated imaging properties|
|US9044162||Jan 25, 2013||Jun 2, 2015||Senorx, Inc.||Marker delivery device with releasable plug|
|US9149341 *||Nov 21, 2011||Oct 6, 2015||Senorx, Inc||Deployment of polysaccharide markers for treating a site within a patient|
|US9237937||Feb 20, 2015||Jan 19, 2016||Senorx, Inc.||Cavity-filling biopsy site markers|
|US9272160 *||Aug 3, 2011||Mar 1, 2016||Wake Forest University Health Sciences||Tethered and/or visually coded brachytherapy devices and related methods|
|US9327061||Sep 21, 2009||May 3, 2016||Senorx, Inc.||Porous bioabsorbable implant|
|US20030225437 *||Apr 4, 2003||Dec 4, 2003||Ferguson Patrick J.||Device for retaining material|
|US20030233101 *||Jun 17, 2002||Dec 18, 2003||Senorx, Inc.||Plugged tip delivery tube for marker placement|
|US20040044267 *||Aug 29, 2002||Mar 4, 2004||Kinamed, Inc.||Method and instrument for surgical delivery of biocompatible materials|
|US20040116767 *||Sep 9, 2003||Jun 17, 2004||Lebovic Gail S.||Brachytherapy apparatus and methods of using same|
|US20040162574 *||Aug 5, 2002||Aug 19, 2004||Viola Frank J.||Tissue marking apparatus and method|
|US20040225176 *||May 5, 2003||Nov 11, 2004||Flanagan Richard J.||Brachytherapy seed transport devices and methods for using same|
|US20050228311 *||Mar 31, 2004||Oct 13, 2005||Beckman Andrew T||Marker device and method of deploying a cavity marker using a surgical biopsy device|
|US20050245785 *||Oct 28, 2004||Nov 3, 2005||Tarone Theodore T||Biodegradable seed placement device and method|
|US20060063961 *||Aug 24, 2004||Mar 23, 2006||Drobnik Christopher D||Brachytherapy apparatus for dispensing medication|
|US20060063962 *||Aug 24, 2004||Mar 23, 2006||Drobnik Christopher D||Brachytherapy system for dispensing medication|
|US20060100476 *||Nov 4, 2005||May 11, 2006||Anthony Biscotti||Brachytherapy needle and methods for assembling same|
|US20060235365 *||Jun 16, 2006||Oct 19, 2006||World Wide Medical Technologies, Llc||Delivery system and method for interstitial radiation therapy using strands constructed with extruded strand housings|
|US20070021642 *||Jul 20, 2006||Jan 25, 2007||Worldwide Medical Technologies Llc||Devices to resist migration and rotation of implants used in brachytherapy and other radiation therapy|
|US20070078291 *||Sep 30, 2005||Apr 5, 2007||North American Scientific||Needle assembly with enhanced steerability|
|US20070135673 *||May 25, 2004||Jun 14, 2007||Elliott Daniel M||Selectively loadable/sealable bioresorbable carrier assembly for radioisotope seeds|
|US20070142694 *||Dec 16, 2005||Jun 21, 2007||North American Scientific||Brachytherapy apparatus|
|US20070265486 *||Jul 13, 2006||Nov 15, 2007||Isodose Control Intellectual Property B.V.||Catheter needle for internally irradiating a tumor in a body part|
|US20070265488 *||Nov 3, 2006||Nov 15, 2007||Worldwide Medical Technologies Llc||After-loader for positioning implants for needle delivery in brachytherapy and other radiation therapy|
|US20070270627 *||Apr 21, 2006||Nov 22, 2007||North American Scientific||Brachytherapy apparatus for asymmetrical body cavities|
|US20080004483 *||Aug 6, 2007||Jan 3, 2008||Tarone Theodore T||Biodegradable seed placement device and method|
|US20080033351 *||Oct 25, 2006||Feb 7, 2008||Allergan, Inc.||Ocular implant delivery assemblies with distal caps|
|US20080097335 *||Oct 25, 2006||Apr 24, 2008||Allergan, Inc.||Ocular implant delivery assemblies|
|US20080146862 *||Nov 5, 2007||Jun 19, 2008||North American Scientific, Inc.||Brachytherapy Device Having Seed Tubes With Individually-Settable Tissue Spacings|
|US20080207982 *||Feb 21, 2008||Aug 28, 2008||Core Oncology, Inc.||Selectively loadable/sealable bioresorbable carrier assembly for radioisotope seeds|
|US20080254298 *||May 29, 2008||Oct 16, 2008||Meadwestvaco Corporation||Method for treating a substrate|
|US20090030309 *||Feb 21, 2008||Jan 29, 2009||Senorx, Inc.||Deployment of polysaccharide markers|
|US20090088665 *||Dec 9, 2008||Apr 2, 2009||Beckman Andrew T||Marker device and method of deploying a cavity marker using a surgical biopsy device|
|US20090099402 *||Dec 15, 2008||Apr 16, 2009||Biocompatibles Uk Limited||Implants for use in brachytherapy and other radiation therapy that resist migration and rotation|
|US20090124846 *||Jan 21, 2009||May 14, 2009||Biocompatibles Uk Limited||Anchor seed cartridge for use with brachytherapy applicator|
|US20090124894 *||Jan 21, 2009||May 14, 2009||Biocompatibles Uk Limited||Markers for use in brachytherapy and other radiation therapy that resist migration and rotation|
|US20090149692 *||Feb 18, 2009||Jun 11, 2009||Biocompatibles Uk Limited||Implants for use in brachytherapy and other radiation therapy that resist migration and rotation|
|US20090193764 *||Mar 26, 2009||Aug 6, 2009||Core Oncology, Inc.||Selectively Loadable/Sealable Bioresorbable Carrier Assembly for Radioisotope Seeds|
|US20090216063 *||Jan 28, 2009||Aug 27, 2009||Biocompatibles Uk Limited||Bio-absorbable brachytherapy strands|
|US20090264813 *||Oct 22, 2009||Allergan, Inc.||Apparatus and methods for implanting particulate ocular implants|
|US20090312594 *||Aug 7, 2009||Dec 17, 2009||Biocompatibles Uk Limited|
|US20090326314 *||Dec 31, 2009||Cutrer L Michael||Brachytherapy apparatus for asymmetrical body cavities|
|US20100185205 *||Jan 16, 2009||Jul 22, 2010||Allergan, Inc.||Interocular injector|
|US20100256778 *||Jun 17, 2010||Oct 7, 2010||Wilson-Cook Medical Inc.||Surgical Implant|
|US20100261946 *||Jun 25, 2010||Oct 14, 2010||Microspherix Llc||Flexible and/or elastic brachytherapy seed or strand|
|US20110237943 *||Sep 29, 2011||Senorx, Inc.||Fibrous marker and intracorporeal delivery thereof|
|US20120065454 *||Aug 3, 2011||Mar 15, 2012||Andrew Karim Kader||Tethered and/or visually coded brachytherapy devices and related methods|
|US20120078092 *||Nov 21, 2011||Mar 29, 2012||Jones Michael L||Remotely imageable marker system and polysaccharide marker for use in same|
|US20150080845 *||Mar 13, 2014||Mar 19, 2015||Allergan, Inc.||Polymer system for securing implants in syringe needles|
|USD715442||Sep 24, 2013||Oct 14, 2014||C. R. Bard, Inc.||Tissue marker for intracorporeal site identification|
|USD715942||Sep 24, 2013||Oct 21, 2014||C. R. Bard, Inc.||Tissue marker for intracorporeal site identification|
|USD716450||Sep 24, 2013||Oct 28, 2014||C. R. Bard, Inc.||Tissue marker for intracorporeal site identification|
|USD716451||Sep 24, 2013||Oct 28, 2014||C. R. Bard, Inc.||Tissue marker for intracorporeal site identification|
|WO2004098711A2||May 5, 2004||Nov 18, 2004||Draximage Inc.||Brachytherapy seed transport devices and methods for using same|
|WO2004098711A3 *||May 5, 2004||Jan 20, 2005||Draximage Inc||Brachytherapy seed transport devices and methods for using same|
|WO2006023315A2 *||Aug 9, 2005||Mar 2, 2006||C.R. Bard, Inc.||Brachytherapy system for dispensing medication|
|WO2007041204A2 *||Sep 29, 2006||Apr 12, 2007||North American Scientific, Inc.||Needle assembly with enhanced steerability|
|International Classification||A61M36/00, A61M36/12, A61N5/10, A61M5/178, A61M36/04|
|Cooperative Classification||A61N2005/1023, A61N5/1027, A61N2005/1011|
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